Question

Assertion: Presence of a nitro group at ortho or para position increases the reactivity of haloarenes towards nucleophilic substitution.

Reason: Nitro group, being an electron withdrawing group decreases the electron density over the benzene ring

• A. Assertion and reason both are correct statements but reason is not correct explanation of assertion.
• B. Assertion and reason both are wrong statements.
• C. Assertion and reason both are correct and reason is the correct explanation of assertion.
• D. Assertion is wrong but reason is correct statement.
• E. Assertion is correct but reason is wrong statement.

Answer 1

The correct option is C Assertion and reason both are correct and reason is the correct explanation of assertion.

Assertion:
The Nitro Group present on ortho and para position of haloarenes acts as an electron-withdrawing group and thus the deficiency of electrons makes it more reactive towards nucleophilic substitution reaction.

So, the assertion is correct.

Reason:
Nitro group, being an electron withdrawing group decreases the electron density over the benzene ring.

Resonating structure of nitrobenzene

So, the reason is correct.

Conclusion: Assertion and reason both are correct and reason is correct explanation of assertion.

Hence, the correct option is A.